5) Remove valve stem oil seal (1) from valve guide, and then valve
spring seat (2).
NOTE:
Do not reuse oil seal once disassembled. Be sure to use
new oil seal when assembling.
6) Using special tool (Valve guide remover), drive valve guide out
from combustion chamber side to valve spring side.
Special Tool
(A): 09916-44910
NOTE:
Do not reuse valve guide once disassembled. Be sure to
use new valve guide (Oversize) when assembling.
7) Place disassembled parts except valve stem seal and valve
guide in order, so that they can be installed in their original posi-
tion.
INSPECTION
Valve Guides
Using a micrometer and caliper gauge, take diameter readings on
valve stems and guides to check stem-to-guide clearance.
Be sure to take reading at more than one place along the length of
each stem and guide.
If clearance exceeds limit, replace valve and valve guide.
If caliper gauge is not available, check end deflection of valve stem
with a dial gauge instead.
Move stem end in directions (1) and (2) to measure end deflection.
If deflection exceeds its limit, replace valve stem and valve guide.
6A1-34
ENGINE MECHANICAL (F8D ENGINE)
Item
Standard
Limit
Valve stem
In
5.465 – 5.480 mm
(0.2152 – 0.2157 in.)
–––
diameter
Ex
5.440 – 5.455 mm
(0.2142 – 0.2148 in.)
–––
Valve guide
In
5.500 – 5.512 mm
g
I.D.
Ex
(0.2166 – 0.2170 in.)
–––
Stem-to-guide
In
0.020 – 0.047 mm
(0.0008 – 0.0018 in.)
0.07 mm
(0.0027 in.)
g
clearance
Ex
0.045 – 0.072 mm
(0.0018 – 0.0028 in.)
0.09 mm
(0.0035 in.)
Valve stem end deflection limit
In
0.14 mm (0.005 in.)
Valve stem end deflection limit
Ex
0.18 mm (0.007 in.)
